Oil tank



oct, 26,19%, 1,604,257

S. H; BROOKS `OIL TANK Filed March 1o. 1924 till dit

titi

Pateteel @eto dd, ldd@ STEPHEN H. BROOKS, 0l@ GLEVELAND, @m0, ASSIGNOR 130 THE @liliA CONSERVATION ENGINEERING COMPANY, 0F CLEVELAND, OHIO, A @EPURATION 0F OH.

@lill TANK.

Application filed Maren 10, 19%. Serial No. 698,125.

This invention relates to oil. tanks and the primary object is to provide a gas tight oil tank `so constructed that the volatile constituents ofthe oil will not escape to atmosphere, and the invention includes a liquid seal for the tank, the liquid seal being variable as to volume, so that it will always maintain the tank full, irrespective oit the actual amount of the oil in the tank, that is the tank is so `constructed that when there is a relatively small amount of oil in the tank, there will be a relativelyv large amount of water and when there is a relatively large amount of oilin the tank the amount of water will be relatively small and l. have provided means whereby the amount ot water in the tank will be automatically regulated in pro ortion to the amount of oil in the tank.

'll e novel feature of my invention will be clearly apparent by reference to the following description in connection with the accompanying drawings in which- Fig. 1 is a vertical, longitudinal, sectlonal view through a tank constructed in accordance with my invention, and

lFi 2 is a similar view ot a slightly moditied form ot tank.

Referring now to the drawings by numerals of reference- 1l designates a tank consisting of a vertical wall 2, a bottom 3 and a top 4. rllhe top d of the tank constitutes the door of a deck having a cylindrical channel-shaped wall 5 and extending from the to mem er 4l down to a point adJacent to the ottom3 is a vertical tube 6. A water inlet pipo 7 isconnected to the wall l5 and discharges into the deck and its edective port area at the discharge end is governed by a tioat valve 8 so that when the level of the water in the deck reaches a determined height, the supply ot water will be cut od and when the level drops, the valve can unseat, after the manner of an ordinary flush tank valve.

Leading from. the tank 1 near the top thereof is an oil inlet and outlet pipe 9 that is the pipe 9 servesa 'dual purpose, both tor admittlngl oil and for discharging it. ln the wall 5 ot the deck is an over-flow pipe 10. Since oil is lighter than water, it is obvious that the oil will float upon the body oirwater 11 in the tank, the oil being represented at 12. The oilwill be introduced into the tank 1 under pressure displacing any water that may bein the tank, but at no time is the amount of oil in the tank to be great enough to cause it to displace the water 11 below the bottom of the pipe 6. The pipe 6 therefore constitutes a liquid seal for the oil and the water in the 'deck not only tends to put the oil under pressure but it also is a heat absorbing medium tending to prevent the oil tank becoming too hot.

Water decks for tanks have been provided prior to my invention, but l am not aware that a water deck with a depending pipe extending nearly to the bottom of the tank has been used prior to my invention nor am l aware that'the water for the deck and the li uid seal has been automatically controlle by a Heat valve with an overflow in the deck to allow water to overflow therefrom when it is displaced from the tank, due to an increased volume of oil introduced into the tank, and further ll am not aware that prior to my invention, has it been contemplated to maintain the oil under a hydraulic pressure by introducing in edect, a water piston 1n the tank to cause the Oilto com. pletely fill the u per portion ot the tank and thereby exclude gaseous vapors.

lin Fig. 2 l have shown'a slightly modified form of the invention in which the tank 13 has an o1l inlet and outlet pipe 14 at its top and a water inlet and outlet pipe 15 at the bottom. The pipe 15 has two branches 16 and 17, the first a, water inlet and the second a water outlet, and communication may be had with the pipe 15 and the branches 16 vand 17; by a three-wayl valve 18, Therefore when 1t 1s desired to introduce oilfinto the tank, communication will be established between the pipe 15 and the branch 17 and when it is desired to displace the oil, communication with' the pipe 15 and the branch 16 will beestablished by the' three-way valve 18, the communication between pipe 15 and the branch 17 at this time being closed on'.

From the foregoing it will be apparent that the tank will be itull at all times, irrespective of the amount ot oil therein, for the greater the amount oif oil, the lesser the `amount of water and vice versa, and attention is especially called to the fact that according to the construction shown in Fig. l, that whenever the oil is introduced into the tank, the excess amount of water will dow up through the pipe 6 into the deck and also out through the overdow l0. Therefore the tank may e said to have a variable oil space at the upper portion and a variable water space at lthe lower portion so that the tank can contain two liquids of different Specific gravities and be adapted to receive these liquids in varying proportions.

What I claim and desire to secure by Letters-Patent is: y

1. A sealed oil tank having an oil inlet and outlet at its top. a water outlet and means for automatically delivering water to the tank in pro ortion to the amount of oil displaced there rom, said means comprising a deck at the top of the tank forming a combined reservoir and float chamber and having a water supply pipe discharging thereinto, a ioat valve for controlling the effective port area of the pipe and a pipe leading from the bottom of the deck to a point immediately above the -bottom of the tank.

2. tank having a body portion, a hori zontal wall dividing said tank into an upper and a lower chamber, an oil inlet and outlet pipe in the top of said lower chamber, a water inlet leading to said upper chamber, a oat controlled valve for said water inlet anda conduit leading from said upper chamber through said wall to a point adjacent the bottom of said lower chamber.

3. A tank having a body portion, a horizontal wall dividing Said tank into an upper and a lower chamber, an oil inlet and outlet pipe in the top of said lower chamber, a water inlet leading to said upper chamber, a float controlled valve 'for said water inlet, an overiow pipe leading from near the to of said upper chamber, and a conduit lea ing from said u per chamber through said wall to a point adjacent the bottom of said lower chamber.

lln testimony whereof I aix my signature.

STEPHEN H. BROOKS. 

